package com.example.classconnect;

import static com.microsoft.windowsazure.mobileservices.MobileServiceQueryOperations.val;

import java.net.MalformedURLException;
import java.util.List;

import android.animation.Animator;

import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.os.Vibrator;
import android.text.TextUtils;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.view.MenuItem;
import android.support.v4.app.NavUtils;
import com.bugsense.trace.BugSenseHandler;
import com.microsoft.windowsazure.mobileservices.MobileServiceClient;
import com.microsoft.windowsazure.mobileservices.MobileServiceTable;
import com.microsoft.windowsazure.mobileservices.ServiceFilterResponse;
import com.microsoft.windowsazure.mobileservices.TableQueryCallback;



/**
 * Activity which displays a login screen to the user, offering registration as
 * well.
 */
public class LoginActivity extends Activity {


	public static final String EXTRA_EMAIL = "com.example.android.authenticatordemo.extra.EMAIL";

	//private UserLoginTask mAuthTask = null;

	// Values for email and password at the time of the login attempt.
	private String mEmail;
	private String mPassword;

	// UI references.
	private EditText mEmailView;
	private EditText mPasswordView;
	private View mLoginFormView;
	private View mLoginStatusView;
	private TextView mLoginStatusMessageView;
	private MobileServiceClient mClient;
	private MobileServiceTable<User> mUserTable;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		BugSenseHandler.initAndStartSession(this, "43068913");  // bugsense
		setContentView(R.layout.activity_login);
		setupActionBar();
		
		// TODO: 2 Create the Azure client instance, with URL and key
					try {
						mClient = new MobileServiceClient(
							      "https://classconnect.azure-mobile.net/",
							      "HzaUWkJBnWTXxCuREwxyQSaxJSyyJm51",
							      this
							);
						// TODO: 3 Get the Mobile Service Table instance to use
						mUserTable = mClient.getTable(User.class);
					} catch (MalformedURLException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
		// Set up the login form.
		mEmail = getIntent().getStringExtra(EXTRA_EMAIL);
		mEmailView = (EditText) findViewById(R.id.email);
		mEmailView.setText(mEmail);

		mPasswordView = (EditText) findViewById(R.id.password);
		mPasswordView
				.setOnEditorActionListener(new TextView.OnEditorActionListener() {
					@Override
					public boolean onEditorAction(TextView textView, int id,
							KeyEvent keyEvent) {
						if (id == R.id.login || id == EditorInfo.IME_NULL) {
							attemptLogin();
							return true;
						}
						return false;
					}
				});

		mLoginFormView = findViewById(R.id.login_form);
		mLoginStatusView = findViewById(R.id.login_status);
		mLoginStatusMessageView = (TextView) findViewById(R.id.login_status_message);

		findViewById(R.id.sign_in_button).setOnClickListener(
				new View.OnClickListener() {
					@Override
					public void onClick(View view) {
						attemptLogin();
					}
				});
		
		Button registerButton = (Button)this.findViewById(R.id.submitClass);
	}

	/**
	 * Set up the {@link android.app.ActionBar}, if the API is available.
	 */
	@TargetApi(Build.VERSION_CODES.HONEYCOMB)
	private void setupActionBar() {
		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
			// Show the Up button in the action bar.
			
			//** Commented out because it was causing app to crash - Ben
			//getActionBar().setDisplayHomeAsUpEnabled(true);
		}
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		switch (item.getItemId()) {
		case android.R.id.home:
			// This ID represents the Home or Up button. In the case of this
			// activity, the Up button is shown. Use NavUtils to allow users
			// to navigate up one level in the application structure. For
			// more details, see the Navigation pattern on Android Design:
			//
			// http://developer.android.com/design/patterns/navigation.html#up-vs-back
			//
			// TODO: If Settings has multiple levels, Up should navigate up
			// that hierarchy.
			NavUtils.navigateUpFromSameTask(this);
			return true;
		case R.id.action_forgot_password:
			Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
 			emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, new String[] { "jayj8892@gmail.com" });
 			emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Login");
 			emailIntent.putExtra(Intent.EXTRA_TEXT, "I'm having trouble logging into Class Connect, please Help");
 			emailIntent.setType("plain/text");
 			startActivity(emailIntent);
		}
		return super.onOptionsItemSelected(item);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		super.onCreateOptionsMenu(menu);
		getMenuInflater().inflate(R.menu.login, menu);
		return true;
	}

	/**
	 * Attempts to sign in or register the account specified by the login form.
	 * If there are form errors (invalid email, missing fields, etc.), the
	 * errors are presented and no actual login attempt is made.
	 */
	public void attemptLogin() {		
		/*if (mAuthTask != null) {
			return;
		}*/

		// Reset errors.
		mEmailView.setError(null);
		mPasswordView.setError(null);

		// Store values at the time of the login attempt.
		mEmail = mEmailView.getText().toString();
		mPassword = mPasswordView.getText().toString();

		boolean cancel = false;
		View focusView = null;

		// Check for a valid password.
		if (TextUtils.isEmpty(mPassword)) {
			mPasswordView.setError(getString(R.string.error_field_required));
			focusView = mPasswordView;
			cancel = true;
		} else if (mPassword.length() < 4) {
			mPasswordView.setError(getString(R.string.error_invalid_password));
			focusView = mPasswordView;
			cancel = true;
		}

		// Check for a valid email address.
		if (TextUtils.isEmpty(mEmail)) {
			mEmailView.setError(getString(R.string.error_field_required));
			focusView = mEmailView;
			cancel = true;
		} else if (!mEmail.contains("@")) {
			mEmailView.setError(getString(R.string.error_invalid_email));
			focusView = mEmailView;
			cancel = true;
		}

		if (cancel) {
			// There was an error; don't attempt login and focus the first
			// form field with an error.
			Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
			v.vibrate(700);
			focusView.requestFocus();
		} else {
			// Show a progress spinner, and kick off a background task to
			// perform the user login attempt.
			mLoginStatusMessageView.setText(R.string.login_progress_signing_in);
			showProgress(true);
			//mAuthTask = new UserLoginTask();
			mUserTable.where().field("email").eq(mEmailView.getText().toString()).and().field("pwd").eq(mPasswordView.getText().toString()).execute(new TableQueryCallback<User>() {
				@Override
				public void onCompleted(List<User> result, int arg1,
						Exception arg2, ServiceFilterResponse arg3) {
					// TODO Auto-generated method stub
					if (arg2 == null){
						if(!result.isEmpty()){
						System.out.println(result.toString());
						Intent myIntent = new Intent(LoginActivity.this, MainActivity.class);
						myIntent.putExtra("currentUser", result.get(0));
						// *** in the future we want to pass user credentials to next activity
						startActivity(myIntent);
						finish();
					} else{
						System.out.println("loginError");
						Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
						v.vibrate(700);
						mPasswordView
								.setError(getString(R.string.error_incorrect_password));
						mPasswordView.requestFocus();
						showProgress(false);
					}
					}
				}
			});
			//mAuthTask.execute((Void) null);
		}
	}

	/**
	 * Shows the progress UI and hides the login form.
	 */
	@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
	private void showProgress(final boolean show) {
		// On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
		// for very easy animations. If available, use these APIs to fade-in
		// the progress spinner.
		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
			int shortAnimTime = getResources().getInteger(
					android.R.integer.config_shortAnimTime);

			mLoginStatusView.setVisibility(View.VISIBLE);
			mLoginStatusView.animate().setDuration(shortAnimTime)
					.alpha(show ? 1 : 0)
					.setListener(new AnimatorListenerAdapter() {
						@Override
						public void onAnimationEnd(Animator animation) {
							mLoginStatusView.setVisibility(show ? View.VISIBLE
									: View.GONE);
						}
					});

			mLoginFormView.setVisibility(View.VISIBLE);
			mLoginFormView.animate().setDuration(shortAnimTime)
					.alpha(show ? 0 : 1)
					.setListener(new AnimatorListenerAdapter() {
						@Override
						public void onAnimationEnd(Animator animation) {
							mLoginFormView.setVisibility(show ? View.GONE
									: View.VISIBLE);
						}
					});
		} else {
			// The ViewPropertyAnimator APIs are not available, so simply show
			// and hide the relevant UI components.
			mLoginStatusView.setVisibility(show ? View.VISIBLE : View.GONE);
			mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
		}
	}

	/**
	 * Represents an asynchronous login/registration task used to authenticate
	 * the user.
	 */
	/*public class UserLoginTask extends AsyncTask<Void, Void, Boolean> {
		@Override
		protected Boolean doInBackground(Void... params) {
			// TODO: attempt authentication against a network service.
			

			// TODO: register the new account here.
						return canLogin;
		}

		@Override
		protected void onPostExecute(final Boolean success) {
			mAuthTask = null;
			showProgress(false);

			if (success) {
				Intent myIntent = new Intent(LoginActivity.this, MainActivity.class);
				myIntent.putExtra("Email", mEmail);
				// *** in the future we want to pass user credentials to next activity
				startActivity(myIntent);
				finish();
			} else {
				Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
				v.vibrate(700);
				mPasswordView
						.setError(getString(R.string.error_incorrect_password));
				mPasswordView.requestFocus();
			}
		}

		@Override
		protected void onCancelled() {
			mAuthTask = null;
			showProgress(false);
		}
			
	}*/
	
	public void registerUser(View V) {
		Intent myIntent = new Intent(LoginActivity.this, RegistrationActivity.class);
		myIntent.putExtra("Email", mEmail);
		LoginActivity.this.startActivity(myIntent);
	}
}
